In the beginning of 1985, a batch of RD030 dump trucks were purchased. The engine was a Cummins NTA-855C-C310 inline 6-cylinder turbo-supercharged diesel engine with power: 234KW/2100r/min. During the construction, the batch of vehicles fully utilized its advantages of large power, strong bearing capacity, convenient operation, and Other unmatched features of other heavy vehicles. However, in the process of repairing the car's engine, we discovered that some of the faults are universal, and two cases have been taken.
1. The engine emits white smoke: After an engine is overhauled, it enters the tunnel to pull slag. During the process of loading slag, it turns off (but does not turn off the power supply) and restarts. The muffler emits a white smoke. The construction personnel cannot work. After analysis, it is considered that the fuel enters the combustion chamber, resulting in incomplete combustion of the fuel. However, which one of the cylinders cannot be determined. Check the dipstick, the oil plane is higher than the original scale; disassemble the exhaust pipe, observe the exhaust ports of each cylinder, test several times, the results are different, it is still not sure which cylinder into the fuel, replace each cylinder injection seal gasket one by one. The situation remains the same.
Cause Analysis:
As shown in the drawing of the PT fuel injection system, the position of the fuel tank can be seen from the figure. Therefore, when the engine is stopped, the fuel cannot flow to the fuel injector by itself, so a PT pump is set to the fuel injector. Oil check valve. When the engine is off but the power is not turned off, the PT pump solenoid valve is open. Under normal circumstances, the fuel passing through the electric check valve in the oil passage is under the action of the spring force of the one-way valve under the action of the check valve's spring force. The fuel is not entered into the cylinder by the sealing machine; if the check valve spring force is weakened, the fuel depends on the fuel tank. When the high pressure difference between the PT pump and the PT pump is greater than the spring force, the fuel flows through the check valve to the injector .
1.PT Pump 2. Fuel Filter 3. Fuel Tank 4. Return Line 5. Fuel Injector 6. Fuel Distribution Line 7. Solenoid Valve 8. Inlet Check Valve 9. Return Check Valve Replacement Fuel Entry To the valve, the above fault is eliminated immediately. This failure has occurred in most engines.
2, PT pump AFC cover flow valve leakage diesel phenomenon: When the engine starts, there is always a fuel drip from the AFC cover flow valve, generally due to the AFC diaphragm wrinkle surface damage, making the PT pump fuel leakage APC diaphragm cavity caused leakage. As long as the AFC diaphragm is replaced, this fault can be eliminated.
Seed & grain cleaning/ processing plant is a whole set production line made up of different machines. Usually, the seed grain cleaning processing plant includes equipment from seed pre-cleaning, fine cleaning, until seed coating, packing.
Grain seed harvested from ground contains much impurity as dust, straw, husk, stems, lumps, stones. To increase grain seeds market value, the farmers/distributors need clean grain seeds before sell. Our grain cleaning plant offers solution to effectively remove above impurity. Farm equipment as seed huller, pre-cleaner, seed cleaner & grader, destoner will do the job. The huller/de-awner removes seeds' surface husk / awn. After then, seed cleaner & grader will remove the dust, husk, smashed stems by air suction cleaning. Meanwhile, it will remove the oversize and undersize impurity by sieve grading. After air screen cleaning, the destoner will separate the stones, lumps, glass and other heavy impurity. To remove the stones and clods, we also have magnetic separator, it is used to remove the magnetic clods and other magnetic impurity. After grain being cleaned by above procedures, customers normally add gravity separator to remove bad, immature, eaten, sicken seeds. Gravity Separator will help to find the healthy seeds. In order to improve the seeds germination rate, seeds coating machine is essential. Seed treater will coat the chemical, fertilizer film on seeds' surface. The chemical will protect the seeds underground from worm's eaten and prevent diseases. The fertilizer will offer rich nutrition during seeds budding stage. Finally the cleaned grain/ seeds are being weighted and packed into bags.
Above is typical grain seed cleaning, processing procedure introduction. For different customers' demands, raw material requirements, we will customize the specific suitable plant design. For example, if clients clean beans, we will recommend extra Bean Polishing Machine to remove soil/dust on bean surface. If client require a high cleaning rate, the color sorter, hands picking belt will be added. We provide customized plant solutions basing on different cleaning situation.
Up to now, we have clients over 100 countries, and we built plants
over 20 countries. We have engineer oversea on -site installation and training
service. Our goal is to make sure the grain seed cleaning plant run well and client
master the operation tips. It is our aim to help clients get satisfied grain
seed cleaning effect.
Seed & Grain Cleaning / Processing Plant
Seed Cleaning Plant,Grain Seed Cleaning Plant,Grain Procesing Plant,Grain Cleaning Plant
SHIJIAZHUANG SYNMEC INTERNATIONAL TRADING LIMITED , https://www.seedgraincleaner.com